New York legislators will need much of this week to pass the $135 billion budget they negotiated with Gov. Andrew Cuomo, though the Senate began advancing legislation in a rare Sunday session.

Cuomo and the Legislature had once predicted the budget would be final March 21, but policy issues bogged down talks. Instead of passing an extraordinarily early budget as they planned, lawmakers now will rush to meet the April 1 deadline a few days early.

The assembly postponed its tentatively planned Sunday session to Thursday. Several religious holidays in the coming week, including Passover and Easter, complicated scheduling.